Production Asymmetry of $D_s$ from 600 GeV/c $Σ^-$ and $π^-$ beam

Details Production Asymmetry of $D_s$ from 600 GeV/c $Σ^-$ and $π^-$ beam Production Asymmetry of $D_s$ from 600 GeV/c $Σ^-$ and $π^-$ beam

2003-02-25

arxiv.org/abs/hep-ex/0302039v1

Phys.Lett.B558:34-40,2003

Physics

High Energy Physics

High Energy Physics - Experiment

11 pages, 5 figures, submitted to Physics Letter B

Scientific paper

10.1016/S0370-2693(03)00246-6

The production of $D_s^-$ relative to $D_s^+$ as a function of $x_F $ with 600 GeV/c $\Sigma^-$ beam is measured in the interval $0.15 < x_F < 0.7$ by the SELEX (E781) experiment at Fermilab. The integrated charge asymmetries with 600 GeV/c $\Sigma^-$ beam ($0.53\pm0.06$) and $\pi^-$ beam ($0.06\pm0.11$) are also compared. The results show the $\Sigma^-$ beam fragments play a role in the production of $D_s^-$, as suggested by the leading quark model.

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